Intelligent voice system and method for controlling projector by using the intelligent voice system

ABSTRACT

The disclosure provides an intelligent voice system and a method for controlling a projector. The system includes a voice assistant, a cloud service platform, a projector, and a management server. When the voice assistant receives a voice signal for controlling the projector, the voice assistant extracts keywords from the voice signal and transmits the keywords to the cloud service platform, wherein the keywords include an alias corresponding to the projector and a first control command, and the cloud service platform includes second control commands. The cloud service platform analyzes the first control command, retrieves the corresponding second control command according to the first control command, and transmits the alias of the projector and the corresponding second control command to the management server. The management server accesses/controls the projector in response to the alias and adjusts the projector as a first operating state according to the corresponding second control command.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the priority benefits of U.S. provisional application Ser. No. 62/737,126, filed on Sep. 27, 2018 and China application serial no. 201811196308.2, filed on Oct. 15, 2018. The entirety of each of the above-mentioned patent applications is hereby incorporated by reference herein and made a part of this specification.

BACKGROUND Technical Field

The disclosure relates to an intelligent voice system and a control method, and in particular, to an intelligent voice system and a method for controlling a projector by using the intelligent voice system.

Description of Related Art

With the development of technology, intelligent devices such as intelligent voice assistants and intelligent furniture have become increasingly popular. The intelligent voice assistant allows a user to complete the assigned task simply through a vocal conversation and can thus effectively improve the efficiency of work execution.

In some applications, the user can control the intelligent voice assistant to control part of the intelligent furniture (e.g., air conditioners, lights, etc. in a space) on his/her behalf by sending a voice signal to the intelligent voice assistant, which allows the user to control the intelligent furniture in a more convenient and intuitive manner.

However, no technical means is provided in the related art for the user to control a projector through the intelligent voice assistant. Therefore, for people skilled in the art, how to design a system that allows the intelligent voice assistant to control the projector in response to the user's voice signal has become an issue in the art.

The information disclosed in this Background section is only for enhancement of understanding of the background of the described technology and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Further, the information disclosed in the Background section does not mean that one or more problems to be resolved by one or more embodiments of the disclosure were acknowledged by a person of ordinary skill in the art.

SUMMARY

In view of the above, the disclosure provides an intelligent voice system and a method for controlling a projector by using the intelligent voice system, which can be used to solve the above technical problem.

The disclosure provides an intelligent voice system including a first voice assistant, a first cloud service platform, a first projector, and a management server. The first cloud service platform is connected to and manages the first voice assistant. The management server is connected to the first cloud service platform and the first projector and is configured to manage and control the first projector. When the first voice assistant receives a first voice signal for controlling the first projector, the first voice assistant extracts a plurality of first keywords from the first voice signal and transmits the plurality of first keywords to the first cloud service platform. The plurality of first keywords includes a first alias corresponding to the first projector and a first control command. The first cloud service platform includes a first semantic analyzing program and the first cloud service platform includes a plurality of second control commands. The first cloud service platform analyzes the first control command according to the first semantic analyzing program, acquires, retrieves, or generates the corresponding second control command according to the first control command, and transmits the first alias of the first projector and the corresponding second control command to the management server. The management server accesses the first projector in response to the first alias and adjusts the first projector as a first operating state according to the corresponding second control command.

The disclosure provides an intelligent voice system including a first voice assistant, a first projector, and a first cloud service server. The first cloud service server is connected to the first voice assistant and the first projector and is configured to manage and control the first voice assistant and the first projector. When the first voice assistant receives a first voice signal for controlling the first projector, the first voice assistant extracts a plurality of first keywords from the first voice signal and transmits the plurality of first keywords to the first cloud service server. The plurality of first keywords includes a first alias corresponding to the first projector and a first control command. The first cloud service server includes a first semantic analyzing program and the first cloud service server includes a plurality of second control commands. The first cloud service server analyzes the first control command according to the first semantic analyzing program, acquires, retrieves, or generates the corresponding second control command according to the first control command, accesses the first projector in response to the first alias, and adjusts the first projector as a first operating state according to the corresponding second control command.

The disclosure provides a method for controlling a projector adapted for the above intelligent voice system. The method includes the following steps. When the first voice assistant receives a first voice signal for controlling the first projector, the first voice assistant extracts a plurality of first keywords from the first voice signal and transmits the plurality of first keywords to the first cloud service platform. The plurality of first keywords includes a first alias corresponding to the first projector and a first control command. The first cloud service platform includes a first semantic analyzing program and the first cloud service platform includes a plurality of second control commands. The first cloud service platform analyzes the first control command according to the first semantic analyzing program, acquires, retrieves, or generates the corresponding second control command according to the first control command, and transmits the first alias of the first projector and the corresponding second control command to the management server. The management server accesses the first projector in response to the first alias and adjusts the first projector as a first operating state according to the corresponding second control command.

The disclosure provides an intelligent voice system including a first projector and a first cloud service server. The first projector includes a first voice assistant. The first cloud service server is connected to the first voice assistant and the first projector and is configured to manage and control the first voice assistant and the first projector. When the first voice assistant receives a first voice signal for controlling the first projector, the first voice assistant extracts a plurality of first keywords from the first voice signal and transmits the plurality of first keywords to the first cloud service server. The plurality of first keywords includes a first alias corresponding to the first projector and a first control command. The first cloud service server includes a first semantic analyzing program and the first cloud service server includes a plurality of second control commands. The first cloud service server analyzes the first control command according to the first semantic analyzing program, acquires, retrieves, or generates the corresponding second control command according to the first control command, accesses the first projector in response to the first alias, and adjusts the first projector as a first operating state according to the corresponding second control command.

In light of the above, the method for controlling a projector provided in the disclosure allows the user to control the operating state of the projector by saying the voice signal to the voice assistant to thereby provide a novel, intuitive, and convenient projector control system.

Other objectives, features and advantages of the disclosure will be further understood from the further technological features disclosed by the embodiments of the present disclosure wherein there are shown and described preferred embodiments of this disclosure, simply by way of illustration of modes best suited to carry out the disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the disclosure and, together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic diagram illustrating an intelligent voice system according to an embodiment of the disclosure.

FIG. 2 is a flowchart illustrating a method for controlling a projector according to an embodiment of the disclosure.

FIG. 3 is a schematic diagram illustrating an intelligent voice system according to FIG. 1.

FIG. 4 is a schematic diagram illustrating an intelligent voice system according to FIG. 3.

FIG. 5 is a schematic diagram illustrating an intelligent voice system according to FIG. 1.

FIG. 6 is a schematic diagram illustrating an intelligent voice system according to FIG. 1, FIG. 3, FIG. 4, and FIG. 5.

FIG. 7A is a schematic diagram illustrating an intelligent voice system according to FIG. 1.

FIG. 7B is a schematic diagram illustrating another intelligent voice system according to FIG. 1.

FIG. 8 is a schematic diagram illustrating control on a projection situation of a video platform interface by an intelligent voice system according to FIG. 1.

FIG. 9 is a flowchart illustrating a method for controlling a projector according to FIG. 8.

FIG. 10 is a schematic diagram illustrating performance of a search operation in a video platform interface according to FIG. 8 and FIG. 9.

FIG. 11 is a schematic diagram illustrating performance of an interface scroll in a video platform interface according to FIG. 10.

FIG. 12 is a schematic diagram illustrating performance of a playback operation in a video platform interface according to FIG. 11.

FIG. 13 is a schematic diagram illustrating performance of a bookmark adding operation in a video platform interface according to FIG. 12.

FIG. 14 is a schematic diagram illustrating performance of a bookmark adding operation in a video platform interface according to FIG. 13.

DESCRIPTION OF THE EMBODIMENTS

In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings which form a part hereof, and in which are shown by way of illustration specific embodiments in which the disclosure may be practiced. In this regard, directional terminology, such as “top,” “bottom,” “front,” “back,” etc., is used with reference to the orientation of the Figure(s) being described. The components of the disclosure can be positioned in a number of different orientations. As such, the directional terminology is used for purposes of illustration and is in no way limiting. On the other hand, the drawings are only schematic and the sizes of components may be exaggerated for clarity. It is to be understood that other embodiments may be utilized and structural changes may be made without departing from the scope of the disclosure. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting.

The use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless limited otherwise, the terms “connected,” “coupled,” and “mounted” and variations thereof herein are used broadly and encompass direct and indirect connections, couplings, and mountings. Similarly, the terms “facing,” “faces” and variations thereof herein are used broadly and encompass direct and indirect facing, and “adjacent to” and variations thereof herein are used broadly and encompass directly and indirectly “adjacent to”. Therefore, the description of “A” component facing “B” component herein may contain the situations that “A” component directly faces “B” component or one or more additional components are between “A” component and “B” component. Also, the description of “A” component “adjacent to” “B” component herein may contain the situations that “A” component is directly “adjacent to” “B” component or one or more additional components are between “A” component and “B” component. Accordingly, the drawings and descriptions will be regarded as illustrative in nature and not as restrictive.

Referring to FIG. 1, FIG. 1 is a schematic diagram illustrating an intelligent voice system according to an embodiment of the disclosure. As shown in FIG. 1, an intelligent voice system 100 includes a voice assistant 102 a, a cloud service platform 104 a, a projector 106 a, and a management server 108. The above devices may all be connected to each other via a network (Internet) 110. “Connection” is defined herein as mutual transmission of signals.

In the present embodiment, the projector 106 a includes a controller 106 a 1 and a light source device 106 a 2. The voice assistant 102 a is, for example, an external device connected to the projector 106 a via a signal. The voice assistant 102 a includes a microphone, a speaker, and a wireless network medium and/or a wired network medium (e.g., a network card or a relevant dongle; it is not limited to transmission using Bluetooth, Wi-Fi, Zigbee, or another wireless transmission medium, and it is also not limited to transmission using optical fibers or another wired transmission interface). The voice assistant 102 a is, for example, a smart speaker (e.g., Amazon Echo produced by Amazon™ or Google Assistant produced by Google™, but is not limited thereto), or another intelligent device that allows a user to use a voice signal AS1 to represent an input command and perform a corresponding operation. Alternatively, the voice assistant 102 a may also be a voice circuit device built in the projector 106 a. The voice circuit device includes, for example, a voice recognition processor, an artificial intelligence processing unit (AI processing chip), or a neural-network processing unit (neural-network processing chip). In different embodiments, before the user instructs the voice assistant 102 a to perform a specific operation through the voice signal, the user may first say a specific wake-up word to the voice assistant 102 a to wake up the voice assistant 102 a. The so-called “waking up” means turning on or starting. For example, if the voice assistant 102 a is Amazon Echo, the user may say wake-up words such as “Alexa” and/or “Echo” to the voice assistant 102 a to wake up the voice assistant 102 a. In addition, if the voice assistant 102 a is Google Assistant, the user may say wake-up words such as “OK Google” and/or “Hey Google” to the voice assistant 102 a to wake up the voice assistant 102 a, and the disclosure is not limited thereto.

The cloud service platform 104 a is connected to the voice assistant 102 a via the network 110 and may be a network platform set up by the manufacturer of the voice assistant 102 a to manage the voice assistant 102 a. For example, if the voice assistant 102 a is Amazon Echo, the corresponding cloud service platform 104 a may be Amazon Web Service (AWS). For another example, if the voice assistant 102 a is Google Assistant, the corresponding cloud service platform 104 a may be the Google cloud server or the Google service platform.

In different embodiments, the cloud service platform 104 a may store/record skill applications corresponding to the voice assistant 102 a. The skill applications may be produced by manufacturers of applications (e.g., a projector manufacturer) and installed on the cloud service platform 104 a.

In an embodiment, the user may say the voice signal AS1 to the voice assistant 102 a. The voice signal AS1 includes an invocation name corresponding to the skill application to be used and an intent, and the ordering thereof is not specifically limited. When the voice assistant 102 a receives the voice signal including the invocation name and the intent, the voice assistant 102 a may extract/acquire keywords (including the above invocation name, intent, etc.) from the voice signal and transmit the keywords to the cloud service platform 104 a. Next, the cloud service platform 104 a finds the corresponding skill application according to the above invocation name and correspondingly controls the voice assistant 102 a to perform the corresponding operation (e.g., answering a question raised by the user etc., but is not limited thereto) according to the intent said/input by the user. For example, the user says the voice signal for powering on a Company A projector, and “Company A projector” represents the invocation name corresponding to the skill application to be used, and “powering on” represents the intent. When the voice assistant 102 a receives the voice signal for powering on the Company A projector, the voice assistant 102 a transmits the voice signal to the cloud service platform 104 a. Next, the cloud service platform 104 a finds the skill application provided by Company A according to the above invocation name. The cloud service platform 104 a provides a first response signal R1 to the voice assistant 102 a and controls the voice assistant 102 a to answer a response voice signal RS1 “Powering on Company A projector.”.

The management server 108 is connected to the cloud service platform 104 a and the projector 106 a and is configured to manage and control the projector 106 a. In an embodiment, the management server 108 may be set up and maintained by the manufacturer of the projector 106 a and may be configured to correspondingly control the projector 106 a according to the control command from the cloud service platform 104. In addition, the disclosure is not limited to the case that the management server 108 and the cloud service platform 104 a are provided in different servers. In other embodiments, the cloud service platform 104 a and the management server 108 may be provided in the same server. In other words, the cloud service platform 104 a may be connected to the management server 108 by being located in the same server.

In an embodiment, a specific skill application for controlling the projector 106 a may be installed on the cloud service platform 104 a to allow the user to control the operating state of the projector 106 a through the voice assistant 102 a. In this case, after the user says the invocation name of the specific skill application and the intent to the voice assistant 102 a, the cloud service platform 104 a may then forward the user's intent to the management server 108 managing the projector 106 a based on the invocation name, so as to have the management server 108 correspondingly adjust the operating state of the projector 106 a. The relevant operation details will be further described with reference to FIG. 2.

Referring to FIG. 2, FIG. 2 is a flowchart illustrating a method for controlling a projector according to an embodiment of the disclosure. The method shown in FIG. 2 may be performed in coordination with the intelligent voice system 100 of FIG. 1, and the details of the steps of FIG. 2 will be described below with reference to the devices shown in FIG. 1.

First, in step S210, when the voice assistant 102 a receives a voice signal AS1 for controlling the projector 106 a, the voice assistant 102 a may extract/acquire a plurality of first keywords from the voice signal AS1 and transmit the first keywords to the cloud service platform 104 a.

In an embodiment, the first keywords may include a first alias AL1 corresponding to the projector 106 a and a first control command CMD1. In different embodiments, the user registers on the website page corresponding to the management server 108 of the projector manufacturer. In other words, the projector 106 a has been registered on the management server 108 in advance based on the first alias AL1 and the unique identification information (e.g., a serial number) of the projector 106 a. Moreover, the first alias AL1 of the projector 106 a may be selected from a plurality of predetermined aliases (e.g., living room, bedroom, etc.) provided by the management server 108 in the registration process of the projector 106 a. In addition, the first control command CMD1 may correspond to the user's intent, i.e., the control operation (e.g., powering on, powering off, increasing/decreasing brightness, increasing/decreasing contrast ratio, starting on screen display (OSD), etc.) to be performed on the projector 106 a. The starting on screen display (OSD) means that turning on the menu of OSD function for adjusting current status of projector.

In the present embodiment, the cloud service platform 104 a may include a first semantic analyzing program and a plurality of second control commands CMD2. Each of the second control commands CMD2 is, for example, a control command (e.g., powering on, powering off, increasing/decreasing brightness, increasing/decreasing contrast ratio, starting OSD, etc.) pre-established by the manufacturer of the projector 106 a.

In an embodiment, the first semantic analyzing program may include a first lookup table, and each of the second control commands CMD2 may be recorded in the first lookup table for searching, but the disclosure is not limited thereto. In another embodiment, the first semantic analyzing program may include information on each of the second control commands CMD2. In another embodiment, the first lookup table recording each of the second control commands CMD2 may also be stored in a database (not shown) in the cloud service platform 104 a. In other embodiments, each of the second control commands CMD2 may also be generated through artificial intelligence or machine learning. For example, the cloud service platform 104 a may perform deep learning based on the history of the voice input of the user to learn the user's habitual words and grammar and further establish the plurality of second control commands CMD2, but the disclosure is not limited thereto.

Therefore, in step S220, the cloud service platform 104 a may analyze the first control command CMD1 according to the first semantic analyzing program, acquire/retrieve or generate the corresponding second control command CMD2 according to the first control command CMD1, and transmit the first alias AL1 of the projector 106 a and the corresponding second control command CMD2 to the management server 108. It is noted that the cloud service platform 104 a is configured to convert the first control command CMD1, which is originally a voice signal, into a text file for comparing with the second control commands CMD2 in the cloud service platform 104 a. In an embodiment, the second control command CMD2 may be a text file but is not limited thereto.

For example, if the first control command CMD1 input by the user is “power on”, in the case that the second control command CMD2 corresponding to “power on” is stored on the cloud service platform 104 a, the cloud service platform 104 a may accordingly retrieve the second control command CMD2 corresponding to “power on”. Next, the cloud service platform 104 a may transmit the first alias AL1 of the projector 106 a and the second control command CMD2 corresponding to “power on” to the management server 108. For another example, if the first control command CMD1 input by the user is “increase brightness”, in the case that the second control command CMD2 corresponding to “increase brightness” is stored on the cloud service platform 104 a, the cloud service platform 104 a may accordingly retrieve the second control command CMD2 corresponding to “increase brightness”. Next, the cloud service platform 104 a may transmit the first alias AL1 of the projector 106 a and the second control command CMD2 corresponding to “increase brightness” to the management server 108.

In other embodiments, if the second control command CMD2 corresponding to the first control command CMD1 (e.g., turning on the light) input by the user is not present on the cloud service platform 104 a, the cloud service platform 104 a may control the voice assistant 102 a to output/reply a response sentence of recognition failure (e.g., “Sorry, I don't know what you mean.”), but the disclosure is not limited thereto.

Next, in step S230, the management server 108 may access/control the projector 106 a (it means that the management server 108 reads information of the projector 106 a to control the projector 106 a) in response to the first alias AL1 and adjust the projector 106 a as a first operating state (e.g., powering on, powering off, increasing/decreasing brightness, increasing/decreasing contrast ratio, starting OSD, etc.) according to the corresponding second control command CMD2.

In an embodiment, the management server 108 may generate a corresponding third control command CMD3 according to the second control command CMD2 and transmit the third control command CMD3 to the controller 106 a 1 of the projector 106 a.

Correspondingly, the controller 106 a 1 of the projector 106 a may receive the third control command CMD3 and adjust the first operating state of the projector 106 a according to the third control command CMD3. The controller 106 a 1 includes, for example, a central processing unit (CPU), or another programmable microprocessor, digital signal processor (DSP), programmable controller, application specific integrated circuit (ASIC), programmable logic device (PLD) for general or specific purposes, another similar device, or a combination of these devices. In an embodiment, the controller 106 a 1 may include a first program (not shown). After receiving the third control command CMD3, the controller 106 a 1 may acquire a fourth control command CMD4 according to the first program and adjust the first operating state of the projector 106 a accordingly. In the present embodiment, the fourth control command CMD4 may include a digital signal that may be configured to specifically adjust the hardware operating state of the projector 106 a in response to the third control command CMD3 to implement the above first operating state. For example, when the third control command CMD3 is “increase brightness”, the controller 106 a 1 may execute the first program to generate a digital signal for increasing the driving current of the light source and/or increasing the rotational speed of the fan, and use the digital signal as the fourth control command CMD4, wherein the fourth control command CMD4 is provided by the controller 106 a 1 to the light source device 106 a 2, but the disclosure is not limited thereto.

In another embodiment, the first program of the projector 106 a may include a second lookup table. The second lookup table may include pre-established fifth control commands and the corresponding fourth control commands CMD4, and the fifth control commands are identical to the third control commands CMD3. In other words, the first program of the projector 106 a may record the correspondence between each of the fifth control commands and the fourth control commands CMD4 in the second lookup table. In this case, when the controller 106 a 1 receives the third control command CMD3, the controller 106 a 1 may directly find the fifth control command identical to the third control command CMD3 and the corresponding fourth control command CMD4 from the second lookup table to further adjust the hardware operating state of the projector 106 a to implement the above first operating state. For example, the second lookup table may record a fifth control command “increase brightness” and a fourth control command CMD4 “generate a digital signal for increasing driving current of light source and/or increasing rotational speed of fan” that correspond to each other. Therefore, when the third control command CMD3 is “increase brightness”, the controller 106 a 1 may look up in the second lookup table and find the fifth control command “increase brightness”, which is identical to the third control command CMD3 to further acquire the fourth control command CMD4 (i.e., “generate a digital signal for increasing driving current of light source and/or increasing rotational speed of fan”) corresponding to the fifth control command. Then, the projector 106 a can adjust the hardware operating state of the projector 106 a according to the fourth control command CMD4 to implement the above first operating state, but the disclosure is not limited thereto.

Moreover, in an embodiment, the projector 106 a may include electronic components such as a fan, a light source driver, a speaker, etc., and the third control command CMD3 may include information of the above electronic components and signals for controlling the above electronic components. The information of the above electronic components includes, for example, an identification code, and the signal for controlling the above electronic components includes, for example, a voltage or a current. Thereby, the projector 106 a can specifically adjust the operating state of the relevant electronic components (e.g., increasing the rotational speed of a fan and/or increasing the voltage or current of a light source driver) in response to the third control command CMD3, but the disclosure is not limited thereto.

According to the above, the method for controlling a projector provided in the disclosure allows the user to control the operating state of the projector 106 a by saying the voice signal AS1 to the voice assistant 102 a, which thereby provides a novel, intuitive, and convenient projector control system.

In an embodiment, when the management server 108 accesses/controls the projector 106 a, the projector 106 a provides a second response signal to the management server 108. In other words, the projector 106 a can correspondingly feed back the operating state of the projector 106 a and the current information of each component (e.g., duration of use of the light source, relevant parameter data of the projector set by the user, etc.) to the management server 108.

In an embodiment, after the projector 106 a is adjusted as the first operating state, the projector 106 a may further report the first operating state to the management server 108. Then, the management server 108 may forward the first operating state to the cloud service platform 104 a. Correspondingly, the cloud service platform 104 a generates a first response sentence according to the first operating state and sends the first response sentence to the voice assistant 102 a to have the voice assistant 102 a output the first response sentence. For example, if the projector 106 a is adjusted as the power-on state, the first response sentence output by the voice assistant 102 a may be “The projector is powered on.”, etc. For another example, if the projector 106 a is adjusted as the power-off state, the first response sentence output by the voice assistant 102 a may be “The projector is powered off”, etc., but the disclosure is not limited thereto.

In other embodiments, the method for controlling a projector provided in the disclosure may further allow the user to control the same one projector through different voice assistants, which will be described below.

Referring to FIG. 3, FIG. 3 is a schematic diagram illustrating an intelligent voice system according to FIG. 1. As shown in FIG. 3, an intelligent voice system 300 of the present embodiment includes voice assistants 102 a and 102 b, cloud service platforms 104 a and 104 b, a projector 106 a, and a management server 108.

In the present embodiment, the voice assistants 102 a and 102 b may be manufactured respectively by different manufacturers and may be managed respectively by different cloud service platforms. For example, if the voice assistant 102 a is Amazon Echo, the voice assistant 102 b may be Google Assistant. Correspondingly, the voice assistants 102 a and 102 b may be respectively managed by the cloud service platforms 104 a and 104 b. The cloud service platform 104 a may be, for example, AWS, and the cloud service platform 104 b may be, for example, a Google cloud server, but the disclosure is not limited thereto.

In the present embodiment, in addition to controlling the projector 106 a by saying a voice signal to the voice assistant 102 a, the user can also control the projector 106 a by saying a voice signal to the voice assistant 102 b.

Specifically, when the voice assistant 102 b receives a second voice signal AS2 for controlling the projector 106 a, the voice assistant 102 b may extract a plurality of second keywords from the second voice signal AS2 and transmit the second keywords to the cloud service platform 104 b. The second keywords include the first alias AL1 corresponding to the projector 106 a and a sixth control command CMD6.

Similar to the cloud service platform 104 a, the cloud service platform 104 b includes a second semantic analyzing program and a plurality of seventh control commands CMD7. Each of the seventh control commands CMD7 is, for example, a control command (e.g., powering on, powering off, increasing/decreasing brightness, increasing/decreasing contrast ratio, starting OSD, etc.) pre-established by the manufacturer of the projector 106 a.

Moreover, in the present embodiment, the cloud service platform 104 b may analyze the sixth control command CMD6 according to the second semantic analyzing program, acquire the corresponding seventh control command CMD7 according to the sixth control command CMD6, and transmit the first alias AL1 of the projector 106 a and the seventh control command CMD7 corresponding to the sixth control command CMD6 to the management server 108. Next, the management server 108 may access the projector 106 a in response to the first alias AL1 and adjust the projector 106 a as a second operating state according to the seventh control command CMD7 corresponding to the sixth control command CMD6.

Details of relevant operations above performed in coordination by the voice assistant 102 b, the cloud service platform 104 b, and the management server 108 to complete the control on the projector 106 a are largely identical to those of the operations performed in coordination by the voice assistant 102 a, the cloud service platform 104 a, and the management server 108 as taught above. Moreover, the roles of the second semantic analyzing program, the sixth control command CMD6, and the seventh control command CMD7 above are also similar to those of the first semantic analyzing program, the first control command CMD1, and the second control command CMD2 as taught above. Therefore, reference may be made to the description in the previous embodiment for details thereof, which shall not be repeatedly described herein.

In an embodiment, when the voice assistants 102 a and 102 b are located close to each other, the voice signal AS1 or AS2 said by the user may be received by the voice assistants 102 a and 102 b at the same time.

In an embodiment, since the wake-up word that can be received by the voice assistant 102 a is different from the wake-up word that can be received by the voice assistant 102 b, the operations performed by the voice assistants 102 a and 102 b will also vary depending on the different wake-up words. In other words, only one single voice assistant can be woken up.

In different embodiments, the language that the voice assistant 102 a can process may be the same as or different from the language that the voice assistant 102 b can process (i.e., the language of the voice signal AS1 may be the same as or different from the language of the voice signal AS2), and the operations performed by the voice assistants 102 a and 102 b will also vary depending on whether the language is the same or different.

For example, assuming that the language (e.g., English) of the voice signal AS1 is different from the language (e.g., Japanese) of the voice signal AS2, when the voice assistant 102 a receives the voice signal AS2 and the first semantic analyzing program cannot recognize the voice signal AS2, the voice assistant 102 a may output a response sentence of recognition failure. Similarly, when the voice assistant 102 b receives the voice signal AS1 and the second semantic analyzing program cannot recognize the voice signal AS1, the voice assistant 102 b may also output a response sentence of recognition failure.

Conversely, if the language of the voice signal AS1 is the same as the language of the voice signal AS2 (e.g., both being Japanese), the intelligent voice system 300 can perform other operations to control the projector 106 a, the details of which will be described with reference to FIG. 4.

Referring to FIG. 4, FIG. 4 is a schematic diagram illustrating an intelligent voice system according to FIG. 3. In the present embodiment, when the voice assistant 102 a also receives the voice signal AS2 for controlling the projector 106 a, the voice assistant 102 a may extract the second keywords from the voice signal AS2 and transmit the second keywords to the cloud service platform 104 a. The second keywords include the first alias AL1 corresponding to the projector 106 a and the sixth control command CMD6.

Next, the cloud service platform 104 a may analyze the sixth control command CMD6 according to the first semantic analyzing program and acquire an eighth control command CMD8 according to the sixth control command CMD6, wherein the eighth control command CMD8 is one of the above second control commands CMD2. Moreover, the cloud service platform 104 a may transmit the first alias AL1 of the projector 106 a and the eighth control command CMD8 to the management server 108. Next, the management server 108 may access the projector 106 a in response to the first alias AL1 and adjust the projector 106 a again as the second operating state according to the eighth control command CMD8 corresponding to the sixth control command CMD6.

In brief, when the language that the voice assistants 102 a and 102 b can process is the same and the same one voice signal is received, the voice assistants 102 a and 102 b will respectively implement repetitive control on the projector 106 a (e.g., consecutively performing power-on twice or consecutively increasing the brightness twice) through the corresponding cloud service platforms 104 a and 104 b.

In other embodiments, the method for controlling a projector provided in the disclosure may further allow the user to control different projectors through one single voice assistant, which will be described below.

Referring to FIG. 5, FIG. 5 is a schematic diagram illustrating an intelligent voice system according to FIG. 1. As shown in FIG. 5, an intelligent voice system 500 of the present embodiment includes a voice assistant 102 a, a cloud service platform 104 a, projectors 106 a and 106 b, and a management server 108.

In the present embodiment, the projectors 106 a and 106 b may be manufactured by the same manufacturer. Moreover, similar to the projector 106 a, the projector 106 b may also be registered on the management server 108 in advance based on a second alias AL2 and the unique identification information (e.g., a serial number) of the projector 106 b. In addition, the second alias AL2 of the projector 106 b may be selected from a plurality of predetermined aliases (e.g., living room, bedroom, etc.) provided by the management server 108 in the registration process of the projector 106 b.

In the present embodiment, in addition to controlling the projector 106 a by saying a voice signal to the voice assistant 102 a, the user can also control the projector 106 b by saying a voice signal to the voice assistant 102 a.

Specifically, when the voice assistant 102 a receives a voice signal AS3 for controlling the projector 106 b, the voice assistant 102 a may extract a plurality of third keywords from the voice signal AS3 and transmit the third keywords to the cloud service platform 104 a. The third keywords include the second alias AL2 corresponding to the projector 106 b and a ninth control command CMD9.

Next, the cloud service platform 104 a may analyze the ninth control command CMD9 according to the first semantic analyzing program to acquire a tenth control command CMD10, wherein the tenth control command CMD10 is one of the above second control commands CMD2.

Moreover, the cloud service platform 104 a may transmit the second alias AL2 of the projector 106 b and the tenth control command CMD10 corresponding to the ninth control command CMD9 to the management server 108. Next, the management server 108 may access the projector 106 b in response to the second alias AL2 and adjust the projector 106 b as a third operating state according to the tenth control command CMD10 corresponding to the ninth control command CMD9.

Details of relevant operations above performed in coordination by the voice assistant 102 a, the cloud service platform 104 a, and the management server 108 to complete the control on the projector 106 b are largely identical to those of the operations performed in coordination by the voice assistant 102 a, the cloud service platform 104 a, and the management server 108 to complete the control on the projector 106 a as taught above. Moreover, the roles of the ninth control command CMD9 and the tenth control command CMD10 above are also similar to those of the first control command CMD1 and the second control command CMD2 as taught above. Therefore, reference may be made to the description in the previous embodiment for details thereof, which shall not be repeatedly described herein.

Referring to FIG. 6, FIG. 6 is a schematic diagram illustrating an intelligent voice system according to FIG. 1, FIG. 3, FIG. 4, and FIG. 5. As shown in FIG. 6, an intelligent voice system 600 includes voice assistants 102 a and 102 b, cloud service platforms 104 a and 104 b, projectors 106 a and 106 b, and a management server 108. The intelligent voice system 600 of the present embodiment may be regarded as a combination of the intelligent voice systems 100, 300, and 500 as taught above. In other words, when the user would like to control the projector 106 a and/or 106 b, the user may have the voice assistant 102 a and/or 102 b operate in coordination with the corresponding cloud service platform 104 a and/or 104 b and the management server 108 by saying a voice signal to the voice assistant 102 a and/or 102 b, so as to realize relevant control on the projector 106 a and/or 106 b. Reference may be made to the description in the previous embodiment for relevant details, which shall not be repeatedly described herein.

Referring to FIG. 7A, FIG. 7A is a schematic diagram illustrating an intelligent voice system according to FIG. 1. As shown in FIG. 7A, an intelligent voice system 700 includes a voice assistant 102 a, a cloud service server 710, and a projector 106 a. The cloud service server 710 may be connected to the voice assistant 102 a and the projector 106 a and is configured to manage and control the voice assistant 102 a and the projector 106 a. In the present embodiment, the cloud service server 710 may be regarded as a combination of the cloud service platform 104 a and the management server 108 of FIG. 1 and can thus integrally perform the operations originally respectively performed by the cloud service platform 104 a and the management server 108 of FIG. 1.

For example, when the voice assistant 102 a receives a voice signal AS1 for controlling the projector 106 a, the voice assistant 102 a extracts a plurality of first keywords from the voice signal AS1 and transmits the first keywords to the cloud service server 710. As in relevant description of FIG. 1, the first keywords may include the first alias AL1 corresponding to the projector 106 a and the first control command CMD1.

Moreover, the cloud service server 710 may include the first semantic analyzing program and the plurality of second control commands CMD2 included in the cloud service platform 104 a of FIG. 1. Similar to the cloud service platform 104 a, the cloud service server 710 may analyze the first control command CMD1 according to the first semantic analyzing program and acquire, retrieve, or generate the corresponding second control command CMD2 according to the first control command CMD1.

Next, similar to the management server 108, the cloud service server 710 may access the projector 106 a in response to the first alias AL1 and adjust the projector 106 a as the first operating state according to the second control command CMD2 corresponding to the first control command CMD1. Reference may be made to the description of the previous embodiment for relevant operation details of the present embodiment, which shall not be repeatedly described herein.

Referring to FIG. 7B, FIG. 7B is a schematic diagram illustrating another intelligent voice system according to FIG. 1. The intelligent voice system of FIG. 7B is highly consistent with the intelligent voice system of FIG. 7A. As shown in FIG. 7B, an intelligent voice system 700 includes a cloud service server 710 and a projector 106 a. The cloud service server 710 may be connected to the projector 106 a and is configured to manage and control a voice assistant 102 a and the projector 106 a. In the present embodiment, the cloud service server 710 may be regarded as a combination of the cloud service platform 104 a and the management server 108 of FIG. 1 and can thus integrally perform the operations originally respectively performed by the cloud service platform 104 a and the management server 108 of FIG. 1. The voice assistant 102 a is integrated into the projector 106 a and the projector 106 a can thus integrally perform the operations originally respectively performed by the voice assistant 102 a and the projector 106 a of FIG. 1.

For example, when the voice assistant 102 a of the projector 106 a receives a voice signal AS1 for controlling the projector 106 a, the voice assistant 102 a extracts a plurality of first keywords from the voice signal AS1 and transmits the first keywords to the cloud service server 710. As in relevant description of FIG. 1, the first keywords may include the first alias AL1 corresponding to the projector 106 a and the first control command CMD1.

Moreover, the cloud service server 710 may include the first semantic analyzing program and the plurality of second control commands CMD2 included in the cloud service platform 104 a of FIG. 1. Similar to the cloud service platform 104 a, the cloud service server 710 may analyze the first control command CMD1 according to the first semantic analyzing program and acquire, retrieve, or generate the corresponding second control command CMD2 according to the first control command CMD1.

Next, similar to the management server 108, the cloud service server 710 may access the projector 106 a in response to the first alias AL1 and adjust the projector 106 a as the first operating state according to the second control command CMD2 corresponding to the first control command CMD1. Reference may be made to the description of the previous embodiment for relevant operation details of the present embodiment, which shall not be repeatedly described herein.

According to the above, the intelligent voice system and the method for controlling a projector provided in the disclosure allow the user to achieve the purpose of controlling the projector by saying a voice signal to the voice assistant. Moreover, with respect to voice assistants manufactured by different manufacturers, the disclosure also provides corresponding systems to enable the user to control one or more projectors manufactured by the same manufacturer through the voice assistants. Thereby, the disclosure provides the user with a novel, intuitive, and convenient projector control system.

In other embodiments, the disclosure further allows the user to control the projector to project a video platform interface through the voice assistant, which will be further described below.

First, the user may first control the projector 106 a to project a video platform interface (e.g., the Youtube™ interface) based on the teaching of FIG. 1. Specifically, assuming that the voice signal AS1 in FIG. 1 is used to control the projector 106 a to project a video platform interface, the voice assistant 102 a may extract a plurality of keywords from the voice signal AS1 and forward the keywords to the cloud service platform 104 a. The keywords may include the first alias AL1 of the projector 106 a and the first control command CMD1 (e.g., “turn on the video platform interface”).

Then, the cloud service platform 104 a may analyze the first control command CMD1 according to the first semantic analyzing program and find the corresponding second control command CMD2 according to the first control command CMD1. Next, the cloud service platform 104 a may forward the first alias AL1 of the projector 106 a and the second control command CMD2 corresponding to the first control command CMD1 to the management server 108. Correspondingly, the management server 108 may access/control the projector 106 a in response to the first alias AL1 and turn on a first application of the projector 106 a according to the second control command CMD2.

In the present embodiment, the first application may be stored in a storage device (e.g., a memory, a flash memory, etc.) (not shown) of the projector 106 a. When the above first application (e.g., an application that can execute Youtube™) is turned on, the projector 106 a can be correspondingly connected to a first website (e.g., the Youtube™ website) that provides the above video platform interface. Moreover, after the projector 106 a receives the video signal from the first website, the projector 106 a may correspondingly project the video platform interface onto a projection surface. The projection surface is, for example, a screen or a wall. In different embodiments, the projector 106 a may be provided with a wireless network medium and/or a wired network medium (e.g., a network card or a relevant dongle; it is not limited to transmission using Bluetooth, Wi-Fi, Zigbee, or another wireless transmission medium, and it is also not limited to transmission using optical fibers or another wired transmission interface) to receive the video signal.

After the projector 106 a is controlled to project the above video platform interface, the disclosure further allows the user to control a projection situation of the video platform interface by the projector 106 a through the voice assistant 102 a, the details of which will be described below.

Referring to FIG. 8 and FIG. 9, FIG. 8 is a schematic diagram illustrating control on a projection situation of a video platform interface by an intelligent voice system according to FIG. 1, and FIG. 9 is a flowchart illustrating a method for controlling a projector according to FIG. 8. The method shown in FIG. 9 may be performed by the intelligent voice system 100 of FIG. 8, and the details of the steps of FIG. 9 will be described below with reference to the devices shown in FIG. 8.

First, in step S910, when the voice assistant 102 a receives a voice signal AS1′ for controlling a video platform interface, the voice assistant 102 a extracts/acquires a plurality of keywords from the voice signal AS1′ and forwards the keywords to the cloud service platform 104 a. The keywords include the first alias AL1 corresponding to the projector 106 a and a first interface control command ICMD1. The keywords may further include the name for waking up the video platform interface. In the present embodiment, the cloud service platform 104 a further includes a plurality of second interface control commands ICMD2.

Then, in step S920, the cloud service platform 104 a may analyze the first interface control command ICMD1 according to the first semantic analyzing program, acquire the corresponding second interface control command ICMD2 according to the first interface control command ICMD1, and transmit the first alias AL1 of the projector 106 a and the second interface control command ICMD2 corresponding to the first interface control command ICMD1 to the management server 108.

Next, in step S930, the management server 108 may access/control the projector 106 a in response to the first alias AL1 and adjust the projection situation of the video platform interface by the projector 106 a. In the present embodiment, the controller 106 a 1 of the projector 106 a may receive the second interface control command ICMD2 and generate a corresponding third interface control command ICMD3 for controlling the operation of the above first application to thereby achieve the effect of adjusting the projection situation of the video platform interface.

In different embodiments, the second interface control command ICMD2 and the corresponding third interface control command ICMD3 may be presented in different forms to allow the user to control the projection situation of the video platform interface according to the requirements. To provide a further understanding of the concept of the disclosure, a number of specific examples will be further described below.

Referring to FIG. 10, FIG. 10 is a schematic diagram illustrating performance of a search operation in a video platform interface according to FIG. 8 and FIG. 9. In the present embodiment, a video platform interface 1010 a is, for example, a default image displayed after the projector 106 a turns on the first application according to the second control command CMD2 and may include a search box 1011. Furthermore, the default image is an image of the video platform interface 1010 a (e.g., the home page of the Youtube website).

In the present embodiment, when the video platform interface is turned on, the user may, for example, say a voice signal AS1′ including keywords such as the first alias AL1 and “search xxx” (xxx may be a keyword of the video to be searched) to the voice assistant 102 a. Correspondingly, the voice assistant 102 a may use “search xxx” as the first interface control command ICMD1 and transmit it along with the first alias AL1 to the cloud service platform 104 a. Next, the cloud service platform 104 a may analyze the first interface control command ICMD1 to find the corresponding second interface control command ICMD2. In the present embodiment, the second interface control command ICMD2 may include a video search command “search” and a search keyword “xxx”.

Next, the management server 108 may access the projector 106 a according to the first alias AL1 and control the projection situation of the projector 106 a according to the second interface control command ICMD2. Correspondingly, the first application of the projector 106 a may perform a search in the first website according to the search keyword to find one or more video items 1021, 1022, etc. corresponding to the search keyword. Then, the projector 106 a may correspondingly project a video platform interface 1010 b, which includes the searched video items 1021 and 1022, as shown in FIG. 10. Thereby, the user can realize the search operation on the video platform interface through the voice assistant 102 a.

Referring to FIG. 11, FIG. 11 is a schematic diagram illustrating performance of an interface scroll in a video platform interface according to FIG. 10. In the present embodiment, it is assumed that the projector 106 a is currently projecting the video platform interface 1010 b, which includes the video items 1021, 1022, etc.

In the present embodiment, the user may, for example, say a voice signal AS1′ including keywords such as the first alias AL1 and “scroll down” to the voice assistant 102 a. Correspondingly, the voice assistant 102 a may use “scroll down” as the first interface control command ICMD1 and transmit it along with the first alias AL1 to the cloud service platform 104 a. Next, the cloud service platform 104 a may analyze the first interface control command ICMD1 to find the corresponding second interface control command ICMD2. In the present embodiment, the second interface control command ICMD2 may include an interface scroll command signal “scroll down”.

Next, the management server 108 may access the projector 106 a according to the first alias AL1 and control the projection situation of the projector 106 a according to the second interface control command ICMD2. Correspondingly, the first application of the projector 106 a may scroll the video platform interface 1010 b according to the interface scroll command signal. Then, the projector 106 a may correspondingly project the video platform interface 1010 b that is being scrolled.

In an embodiment, the user may say a voice signal AS1′ including keywords such as the first alias AL1 and “stop scrolling” to the voice assistant 102 a while the video platform interface 1010 b is being scrolled. Correspondingly, the voice assistant 102 a may use “stop scrolling” as the first interface control command ICMD1 and transmit it along with the first alias AL1 to the cloud service platform 104 a. Next, the cloud service platform 104 a may analyze the first interface control command ICMD1 to find the corresponding second interface control command ICMD2. In the present embodiment, the second interface control command ICMD2 may include a stop scroll command signal “stop scrolling”.

Next, the management server 108 may access the projector 106 a according to the first alias AL1 and control the projection situation of the projector 106 a according to the second interface control command ICMD2. Correspondingly, the first application of the projector 106 a may stop scrolling the video platform interface 1010 b according to the stop scroll command signal. Then, the projector 106 a may correspondingly project a video platform interface 1010 c (i.e., the video platform interface 1010 b after the scroll stops), which includes searched video items 1022, 1023, . . . , 102N, as shown in FIG. 11. Thereby, the user can realize the interface scroll operation on the video platform interface through the voice assistant 102 a.

Referring to FIG. 12, FIG. 12 is a schematic diagram illustrating performance of a playback operation in a video platform interface according to FIG. 11. In the present embodiment, it is assumed that the projector 106 a is currently projecting the video platform interface 1010 c, which includes the video items 1022, 1023, . . . 102N, and the video items 1022 to 102N respectively have corresponding item labels 1022 a, 1023 a, . . . 102Na.

In the present embodiment, the user may, for example, say a voice signal AS1′ including keywords such as the first alias AL1 and “play label oo” (the label oo may be an item label corresponding to the video item to be played) to the voice assistant 102 a. For convenience of illustration, it is assumed below that the user would like to play the video item 102Na; namely, the user may say “play label N”, but the disclosure is not limited thereto.

Correspondingly, the voice assistant 102 a may use “play label N” as the first interface control command ICMD1 and transmit it along with the first alias AL1 to the cloud service platform 104 a. Next, the cloud service platform 104 a may analyze the first interface control command ICMD1 to find the corresponding second interface control command ICMD2. In the present embodiment, the second interface control command ICMD2 may include a play command “play” and a play label “label N”.

Next, the management server 108 may access the projector 106 a according to the first alias AL1 and control the projection situation of the projector 106 a according to the second interface control command ICMD2. Correspondingly, the first application of the projector 106 a may play the video item 102N corresponding to “label N” according to the play command and the play label. Then, the projector 106 a may correspondingly project a video platform interface 1010 d, which includes, for example, the video content of the video item 102N, as shown in FIG. 12. Thereby, the user can realize the playback operation on the video platform interface through the voice assistant 102 a.

Referring to FIG. 13, FIG. 13 is a schematic diagram illustrating performance of a bookmark adding operation in a video platform interface according to FIG. 12. In the present embodiment, it is assumed that the projector 106 a is currently projecting the video platform interface 1010 d, which is, for example, the video content of the video item 102N.

In the present embodiment, the user may, for example, say a voice signal AS1′ including keywords such as the first alias AL1 and “add bookmark zzz” (zzz may be a bookmark name set by the user according to the requirements) to the voice assistant 102 a.

Correspondingly, the voice assistant 102 a may use “add bookmark zzz” as the first interface control command ICMD1 and transmit it along with the first alias AL1 to the cloud service platform 104 a. Next, the cloud service platform 104 a may analyze the first interface control command ICMD1 to find the corresponding second interface control command ICMD2. In the present embodiment, the second interface control command ICMD2 may include a bookmark adding command “add bookmark” and a designated bookmark name “zzz”.

Next, the management server 108 may access the projector 106 a according to the first alias AL1 and control the projection situation of the projector 106 a according to the second interface control command ICMD2. Correspondingly, the first application of the projector 106 a may mark the video content of the video item 102N as the designated bookmark name (i.e., zzz) in the video platform interface 1010 d according to the bookmark adding command and the designated bookmark name. Then, the projector 106 a may correspondingly project a video platform interface 1010 e, which displays, for example, a message 1310 of successful addition of the bookmark, as shown in FIG. 13. It is noted that the information of marking the video content of the video item 102N as the designated bookmark name (i.e., zzz) through the first application of the projector 106 a will be stored in the server (not shown) of the video platform.

After the above bookmark adding operation is completed, the disclosure may allow the user to play the added bookmarks in an intuitive and simple manner, the details of which will be described below.

Referring to FIG. 14, FIG. 14 is a schematic diagram illustrating performance of a bookmark adding operation in a video platform interface according to FIG. 13. In the present embodiment, it is assumed that the projector 106 a is currently projecting the video platform interface 1010 a.

In the present embodiment, the user may, for example, say a voice signal AS1′ including keywords such as the first alias AL1 and “play bookmark zzz” (zzz may be a bookmark previously added by the user, as shown in FIG. 13) to the voice assistant 102 a.

Correspondingly, the voice assistant 102 a may use “play bookmark zzz” as the first interface control command ICMD1 and transmit it along with the first alias AL1 to the cloud service platform 104 a. Next, the cloud service platform 104 a may analyze the first interface control command ICMD1 to find the corresponding second interface control command ICMD2.

In the present embodiment, the second interface control command ICMD2 may include a bookmark play command “play bookmark” and a designated bookmark name “zzz”.

Next, the management server 108 may access the projector 106 a according to the first alias AL1 and control the projection situation of the projector 106 a according to the second interface control command ICMD2. Correspondingly, according to the bookmark play command and the designated bookmark name, the first application of the projector 106 a may provide the video content corresponding to the designated bookmark name stored in the server of the video platform to the projector 106 a, and the projector 106 a may play the video content corresponding to the designated bookmark name. As shown in FIG. 13, the projector 106 a may correspondingly project the video platform interface 1010 d, which, in addition to displaying the video content of the video item 102N, may further display a message 1410 of successful playback of the bookmark.

According to the above, the disclosure allows the user to realize the bookmark adding operation on the video platform interface through the voice assistant 102 a. Moreover, the disclosure further allows the user to play a previously added bookmark by saying a voice signal, which thereby provides a novel, intuitive, and convenient operation method.

In summary of the above, the intelligent voice system and the method for controlling a projector provided in the embodiments of the disclosure allow the user to achieve the purpose of controlling the projector by saying a voice signal to the voice assistant. Moreover, with respect to voice assistants manufactured by different manufacturers, the disclosure also provides corresponding systems to enable the user to control one or more projectors manufactured by the same manufacturer through the voice assistants.

In addition, the intelligent voice system provided in the embodiments of the disclosure allows the user to achieve the purpose of controlling the projector by saying a voice signal to the voice circuit device integrated in the projector.

After the user controls the projector to project the video platform interface through the voice assistant, the disclosure additionally provides a further control system to allow the user to control the projection situation of the video platform interface by the projector (e.g., searching, scrolling, stopping scrolling, playing a video item, adding a bookmark corresponding to a video item, playing a bookmark, etc.) by saying a voice signal to the voice assistant. Thereby, the disclosure provides the user with a novel, intuitive, and convenient projector control system.

The foregoing description of the preferred embodiments of the disclosure has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure to the precise form or to exemplary embodiments disclosed. Accordingly, the foregoing description should be regarded as illustrative rather than restrictive. Obviously, many modifications and variations will be apparent to practitioners skilled in this art. The embodiments are chosen and described in order to best explain the principles of the disclosure and its best mode practical application, thereby to enable persons skilled in the art to understand the disclosure for various embodiments and with various modifications as are suited to the particular use or implementation contemplated. It is intended that the scope of the disclosure be defined by the claims appended hereto and their equivalents in which all terms are meant in their broadest reasonable sense unless otherwise indicated. Therefore, the term “the disclosure”, “the present disclosure” or the like does not necessarily limit the claim scope to a specific embodiment, and the reference to particularly preferred exemplary embodiments of the disclosure does not imply a limitation on the disclosure, and no such limitation is to be inferred. The disclosure is limited only by the spirit and scope of the appended claims. The abstract of the disclosure is provided to comply with the rules requiring an abstract, which will allow a searcher to quickly ascertain the subject matter of the technical disclosure of any patent issued from this disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. Any advantages and benefits described may not apply to all embodiments of the disclosure. It should be appreciated that variations may be made in the embodiments described by persons skilled in the art without departing from the scope of the present disclosure as defined by the following claims. Moreover, no element and component in the present disclosure is intended to be dedicated to the public regardless of whether the element or component is explicitly recited in the following claims. 

What is claimed is:
 1. An intelligent voice system comprising: a first voice assistant; a first cloud service platform, connected to the first voice assistant and adapted to manage the first voice assistant; a first projector; and a management server, connected to the first cloud service platform and the first projector and configured to manage and control the first projector, wherein when the first voice assistant receives a first voice signal for controlling the first projector, the first voice assistant extracts a plurality of first keywords from the first voice signal and transmits the plurality of first keywords to the first cloud service platform, wherein the plurality of first keywords comprises a first alias corresponding to the first projector and a first control command, wherein the first cloud service platform comprises a first semantic analyzing program, and the first cloud service platform comprises a plurality of second control commands, the first cloud service platform analyzes the first control command according to the first semantic analyzing program, acquires, retrieves, or generates the corresponding second control command according to the first control command, and transmits the first alias of the first projector and the corresponding second control command to the management server, and the management server accesses the first projector in response to the first alias and adjusts the first projector as a first operating state according to the corresponding second control command.
 2. The intelligent voice system of claim 1, wherein the first projector is registered on the management server in advance based on the first alias and unique identification information of the first projector.
 3. The intelligent voice system of claim 1, wherein the first alias of the first projector is selected from a plurality of predetermined aliases provided by the management server in a registration process of the first projector.
 4. The intelligent voice system of claim 1, wherein after the first projector is adjusted to the first operating state, the first projector reports the first operating state to the management server, the management server forwards the first operating state to the first cloud service platform, and the first cloud service platform generates a first response sentence according to the first operating state and sends the first response sentence to the first voice assistant such that the first voice assistant outputs the first response sentence.
 5. The intelligent voice system of claim 1, wherein the second control commands are pre-established in the first cloud service platform or generated through artificial intelligence or machine learning.
 6. The intelligent voice system of claim 1, wherein the first semantic analyzing program comprises a first lookup table, and the second control commands are established in the first lookup table.
 7. The intelligent voice system of claim 1, wherein the first semantic analyzing program comprises information corresponding to the plurality of second control commands.
 8. The intelligent voice system of claim 1, wherein the first cloud service platform comprises a database, and the second control commands are stored in the database, wherein the database comprises a first lookup table, and the second control commands are established in the first lookup table.
 9. The intelligent voice system of claim 1, wherein the adjusted first projector as the first operating state is turning on the first projector.
 10. The intelligent voice system of claim 1, wherein the adjusted first projector as the first operating state is starting a menu of on screen display of the first projector.
 11. The intelligent voice system of claim 1, wherein the adjusted first projector as the first operating state is adjusting a projection brightness of the first projector.
 12. The intelligent voice system of claim 1, wherein the management server generates a corresponding third control command according to the second control command corresponding to the first control command and transmits the third control command to a controller of the first projector, and the controller of the first projector receives the third control command and adjusts the first operating state of the first projector according to the third control command.
 13. The intelligent voice system of claim 12, wherein the controller of the first projector comprises a first program, and the controller of the first projector receives the third control command, acquires a fourth control command according to the first program, and adjusts the first operating state of the first projector according to the fourth control command, wherein the fourth control command comprises a digital signal.
 14. The intelligent voice system of claim 13, wherein the first program of the first projector comprises a second lookup table, and the second lookup table comprises pre-established fifth control commands and the corresponding fourth control commands, wherein the fifth control commands are identical to the third control commands.
 15. The intelligent voice system of claim 12, wherein the first projector comprises at least one electronic component, and the third control command comprises information of the at least one electronic component and a signal for controlling the at least one electronic component, wherein the at least one electronic component comprises at least one of a fan, a light source driver, and a speaker, the information of the at least one electronic component comprises an identification code of the at least one electronic component, and the signal for controlling the at least one electronic component comprises a voltage or a current.
 16. The intelligent voice system of claim 1, further comprising: a second voice assistant; a second cloud service platform, connected to the second voice assistant and the management server and adapted to manage the second voice assistant, wherein when the second voice assistant receives a second voice signal for controlling the first projector, the second voice assistant extracts a plurality of second keywords from the second voice signal and transmits the plurality of second keywords to the second cloud service platform, wherein the plurality of second keywords comprises the first alias corresponding to the first projector and a sixth control command, wherein the second cloud service platform comprises a second semantic analyzing program and the second cloud service platform comprises a plurality of seventh control commands, the second cloud service platform analyzes the sixth control command according to the second semantic analyzing program, acquires the corresponding seventh control command according to the sixth control command, and transmits the first alias of the first projector and the seventh control command corresponding to the sixth control command to the management server, and the management server accesses the first projector in response to the first alias and adjusts the first projector as a second operating state according to the seventh control command corresponding to the sixth control command.
 17. The intelligent voice system of claim 16, wherein a language of the first voice signal is different from a language of the second voice signal, wherein when the first voice assistant receives the second voice signal and the first semantic analyzing program cannot recognize the second voice signal, the first voice assistant outputs a response sentence of recognition failure, and when the second voice assistant receives the first voice signal and the second semantic analyzing program cannot recognize the first voice signal, the second voice assistant outputs a response sentence of recognition failure.
 18. The intelligent voice system of claim 16, wherein a language of the first voice signal is the same as a language of the second voice signal, wherein when the first voice assistant receives the second voice signal for controlling the first projector, the first voice assistant extracts the plurality of second keywords from the second voice signal and transmits the plurality of second keywords to the first cloud service platform, wherein the plurality of second keywords comprises the first alias corresponding to the first projector and the sixth control command, the first cloud service platform analyzes the sixth control command according to the first semantic analyzing program, acquires an eighth control command according to the sixth control command, and transmits the first alias of the first projector and the eighth control command to the management server, and the management server accesses the first projector in response to the first alias and adjusts the first projector again as the second operating state according to the eighth control command corresponding to the sixth control command.
 19. The intelligent voice system of claim 18, wherein the eighth control command is one of the plurality of second control commands.
 20. The intelligent voice system according to claim 1, further comprising: a second projector connected to and controlled by the management server, wherein when the first voice assistant receives a third voice signal for controlling the second projector, the first voice assistant extracts a plurality of third keywords from the third voice signal and transmits the plurality of third keywords to the first cloud service platform, wherein the plurality of third keywords comprises a second alias corresponding to the second projector and a ninth control command, and the first cloud service platform analyzes the ninth control command according to the first semantic analyzing program, acquires a tenth control command according to the ninth control command, and transmits the second alias of the second projector and the tenth control command corresponding to the ninth control command to the management server, and the management server accesses the second projector in response to the second alias and adjusts the second projector as a third operating state according to the tenth control command corresponding to the ninth control command.
 21. The intelligent voice system of claim 20, wherein the tenth control command is one of the plurality of second control commands.
 22. The intelligent voice system of claim 20, wherein the second projector is registered on the management server in advance based on the second alias and unique identification information of the second projector.
 23. The intelligent voice system of claim 20, wherein the second alias of the second projector is selected from a plurality of predetermined aliases provided by the management server in a registration process of the second projector.
 24. An intelligent voice system comprising: a first voice assistant; a first projector; and a first cloud service server, connected to the first voice assistant and the first projector and configured to manage and control the first voice assistant and the first projector, wherein when the first voice assistant receives a first voice signal for controlling the first projector, the first voice assistant extracts a plurality of first keywords from the first voice signal and transmits the plurality of first keywords to the first cloud service server, wherein the plurality of first keywords comprises a first alias corresponding to the first projector and a first control command, wherein the first cloud service server comprises a first semantic analyzing program and the first cloud service server comprises a plurality of second control commands, the first cloud service server analyzes the first control command according to the first semantic analyzing program, acquires, retrieves, or generates the second control command corresponding to the first control command according to the first control command, accesses the first projector in response to the first alias, and adjusts the first projector as a first operating state according to the second control command corresponding to the first control command.
 25. A method for controlling a projector adapted for the intelligent voice system of claim 1, the method comprising: extracting, by the first voice assistant, a plurality of first keywords from the first voice signal and transmitting the plurality of first keywords to the first cloud service platform when the first voice assistant receives a first voice signal for controlling the first projector, wherein the plurality of first keywords comprises a first alias corresponding to the first projector and a first control command, wherein the first cloud service platform comprises a first semantic analyzing program and the first cloud service platform comprises a plurality of second control commands; analyzing, by the first cloud service platform, the first control command according to the first semantic analyzing program, acquiring, retrieving, or generating the corresponding second control command according to the first control command, and transmitting the first alias of the first projector and the corresponding second control command to the management server; and accessing, by the management server, the first projector in response to the first alias and adjusting the first projector as a first operating state according to the second control command corresponding to the first control command.
 26. The method of claim 25, wherein the first projector is registered on the management server in advance based on the first alias and unique identification information of the first projector.
 27. The method of claim 25, wherein the first alias of the first projector is selected from a plurality of predetermined aliases provided by the management server in a registration process of the first projector.
 28. The method of claim 25, wherein after the first projector is adjusted as the first operating state, the method further comprises: reporting, by the first projector, the first operating state to the management server; forwarding, by the management server, the first operating state to the first cloud service platform; and generating, by the first cloud service platform, a first response sentence according to the first operating state and sending the first response sentence to the first voice assistant such that the first voice assistant outputs the first response sentence.
 29. The method of claim 25, wherein the second control commands are pre-established in the first cloud service platform or generated through artificial intelligence or machine learning.
 30. The method of claim 25, wherein the first semantic analyzing program comprises a first lookup table, and the second control commands are established in the first lookup table.
 31. The method of claim 25, wherein the first semantic analyzing program comprises information corresponding to the plurality of second control commands.
 32. The method of claim 25, wherein the first cloud service platform comprises a database, and the second control commands are stored in the database, wherein the database comprises a first lookup table, and the second control commands are established in the first lookup table.
 33. The method of claim 25, wherein the step of adjusting the first projector as the first operating state comprises turning on the first projector.
 34. The method of claim 25, wherein the step of adjusting the first projector as the first operating state comprises starting a menu of on screen display of the first projector.
 35. The method of claim 25, wherein the step of adjusting the first projector as the first operating state comprises adjusting a projection brightness of the first projector.
 36. The method of claim 25, further comprising: generating, by the management server, a corresponding third control command according to the second control command corresponding to the first control command and transmitting the third control command to a controller of the first projector; and receiving, by the controller of the first projector, the third control command and adjusting the first operating state of the first projector according to the third control command.
 37. The method of claim 36, wherein the controller of the first projector comprises a first program, and the controller of the first projector receives the third control command, acquires a fourth control command according to the first program, and adjusts the first operating state of the first projector according to the fourth control command, wherein the fourth control command comprises a digital signal.
 38. The method of claim 37, wherein the first program of the first projector comprises a second lookup table, and the second lookup table comprises pre-established fifth control commands and the corresponding fourth control commands, wherein the fifth control commands are identical to the third control commands.
 39. The method of claim 36, wherein the first projector comprises at least one electronic component, and the third control command comprises information of the at least one electronic component and a signal for controlling the at least one electronic component, wherein the at least one electronic component comprises at least one of a fan, a light source driver, and a speaker, the information of the at least one electronic component comprises an identification code of the at least one electronic component, and the signal for controlling the at least one electronic component comprises a voltage or a current.
 40. The method of claim 25, wherein the intelligent voice system further comprises a second voice assistant and a second cloud service platform, wherein the second cloud service platform is connected to the second voice assistant and the management server and manages the second voice assistant, the method further comprising: extracting, by the second voice assistant, a plurality of second keywords from the second voice signal and transmitting the plurality of second keywords to the second cloud service platform when the second voice assistant receives a second voice signal for controlling the first projector, wherein the plurality of second keywords comprises the first alias corresponding to the first projector and a sixth control command, wherein the second cloud service platform comprises a second semantic analyzing program and the second cloud service platform comprises a plurality of seventh control commands; analyzing, by the second cloud service platform, the sixth control command according to the second semantic analyzing program, acquiring the corresponding seventh control command according to the sixth control command, and transmitting the first alias of the first projector and the seventh control command corresponding to the sixth control command to the management server; and accessing, by the management server, the first projector in response to the first alias and adjusting the first projector as a second operating state according to the seventh control command corresponding to the sixth control command.
 41. The method of claim 40, wherein a language of the first voice signal is different from a language of the second voice signal, the method further comprising: when the first voice assistant receives the second voice signal and the first semantic analyzing program cannot recognize the second voice signal, outputting, by the first voice assistant, a response sentence of recognition failure; and when the second voice assistant receives the first voice signal and the second semantic analyzing program cannot recognize the first voice signal, outputting, by the second voice assistant, a response sentence of recognition failure.
 42. The method of claim 40, wherein a language of the first voice signal is the same as a language of the second voice signal, the method further comprising: when the first voice assistant receives the second voice signal for controlling the first projector, extracting, by the first voice assistant, the plurality of second keywords from the second voice signal and transmitting the plurality of second keywords to the first cloud service platform, wherein the plurality of second keywords comprises the first alias corresponding to the first projector and the sixth control command; analyzing, by the first cloud service platform, the sixth control command according to the first semantic analyzing program, acquiring an eighth control command according to the sixth control command, and transmitting the first alias of the first projector and the eighth control command to the management server; and accessing, by the management server, the first projector in response to the first alias and adjusting the first projector again as the second operating state according to the eighth control command corresponding to the sixth control command.
 43. The method of claim 42, wherein the eighth control command is one of the plurality of second control commands.
 44. The method of claim 25, wherein the intelligent voice system further comprises a second projector connected to and controlled by the management server, the method further comprising: when the first voice assistant receives a third voice signal for controlling the second projector, extracting, by the first voice assistant, a plurality of third keywords from the third voice signal and transmitting the plurality of third keywords to the first cloud service platform, wherein the plurality of third keywords comprises a second alias corresponding to the second projector and a ninth control command; analyzing, by the first cloud service platform, the ninth control command according to the first semantic analyzing program, acquiring a tenth control command according to the ninth control command, and transmitting the second alias of the second projector and the tenth control command corresponding to the ninth control command to the management server; and accessing, by the management server, the second projector in response to the second alias and adjusting the second projector as a third operating state according to the tenth control command corresponding to the ninth control command.
 45. The method of claim 44, wherein the tenth control command is one of the plurality of second control commands.
 46. The method of claim 44, wherein the second projector is registered on the management server in advance based on the second alias and unique identification information of the second projector.
 47. The method of claim 44, wherein the second alias of the second projector is selected from a plurality of predetermined aliases provided by the management server in a registration process of the second projector.
 48. An intelligent voice system comprising: a first projector comprising a first voice assistant; and a first cloud service server, connected to the first voice assistant and the first projector and configured to manage and control the first voice assistant and the first projector, wherein when the first voice assistant receives a first voice signal for controlling the first projector, the first voice assistant extracts a plurality of first keywords from the first voice signal and transmits the plurality of first keywords to the first cloud service server, wherein the plurality of first keywords comprises a first alias corresponding to the first projector and a first control command, wherein the first cloud service server comprises a first semantic analyzing program and the first cloud service server comprises a plurality of second control commands, the first cloud service server analyzes the first control command according to the first semantic analyzing program, acquires, retrieves, or generates the second control command corresponding to the first control command according to the first control command, accesses the first projector in response to the first alias, and adjusts the first projector as a first operating state according to the second control command corresponding to the first control command. 